Flyer witch presser



Feb. 13, 1962 A. SCHILTKNECHT FLYER WITH PRESSER Filed Dec. 14, 1959 Patented Feb. 13, 1962 3,020,698 FLYER WITH PRESSER Adolf Schiltknecht, Winterthur, Switzerland, assignor to Job. Jacob Rieter & Co. Ltd, Winterthur, Switzerland, a corporation of Switzerland Filed Dec. 14, 1959, Ser. No. 859,363 4 Claims. (Cl. 57117) The present invention relates to flyers, more particularly to a novel presser arm for the flyers of a spinning machine.

The portion of conventional pressers extending between the rocking axis of the presser and the presser finger, is entirely located in a plane which is normal to the rocking axis of the presser. With the conventional structure, the sliver laid around the presser arm, runs at an inward slant on the arm whereby the sliver leaving the hollow arm of the flyer, which has an inner edge of very small radius, is very sharply bent. This sharp diversion harms the sliver and produces a considerable amount of fly.

It is an object of the present invention to provide a presser arm of a configuration which prevents or substantially reduces the undesired effects of the conventional presser arms. The presser arm according to the invention, which is swingably supported in the conventional manner, by a hollow arm of the flyer, is provided with a portion extending approximately normal to the rotation axis of the flyer and directly below the hollow arm of the flyer. This portion continues by way of a curved portion to a portion which is slanted downwardly and which is followed by a portion which is inclined in the opposite direction and whose end carries the presser finger.

The novel features which are considered characteristic of the invention are set forth with particularity in. the appended claims. The invention itself, however, and additional objects and advantages thereof will best be understood from the following description of embodiments thereof when read in connection with the accompanying drawing, in which:

FIG. 1 is an elevation of a flyer provided with a presser arm according to the invention; the flyer is broken to indi cate that the flyer arms are substantially longer than shown in the drawing.

FIG. 2 is a side view of a modified presser arm according to the invention.

Referring more particularly to the drawing, numeral 1 designates a flyer having an arm 2 and a hollow arm 4 provided with a longitudinal slot 3 for guiding a sliver 5 in the conventional manner. A holder 6 is rotatably supported by the hollow arm 4 in the conventional manner. The holder 6 serves as a counterweight of a presser arm 7 at the lower end of the holder 6. The arm 7 has an approximately circular cross section. The first portion 9 of the arm 7 is located at a substantially right angle to the holder 6 and connected to the latter by way of a curved portion 8. The portion 9 is substantially horizontal and placed in a plane which is normal to the rotation axis R of the flyer. The portion 9 continues by way of a curved portion 9 which is located below the point where the sliver leaves the arm 4, into a downwardly slanted portion forming an angle a with a plane which is normal to the rotation axis of the flyer. The angle a. may 7 be between 30 and and will be, in most cases, between 50 and 60. The downwardly slanted portion continues, at the lowest point 10 of the arm 7, into an upwardly slanted portion 11 which forms an angle ,6 with a plane which is normal to the rotation axis of the flyer. The free end of the arm 7 is provided with a conventional finger 12 which is approximately at the same elevation as the arm portion 9. The angle {3 is preferably not greater than about 30.

FIG. 2 shows a modified presser arm according to the invention in which the angle {3 is zero. There is, therefore, no upwardly inclined portion extending from the lowest portion 10 of the arm. The portion 11 in the embodiment of the invention shown in FIG. 1 is replaced by a portion 11' which extends at a right angle of the rotation axis R. The presser arm may even extend slightly downward as long as the curved portions are so shaped that an undesired sharp diversion of the sliver leaving the hollow arm 4 is avoided.

The curvature following the portion 9 of the presser arm forces the sliver '5, which is shown in dash-dot lines and which is laid around the arm 7, to leave the hollow arm 4 in a direction which is parallel to the rotation axis of the flyer. Thereupon the sliver is diverted at the Zone of the arm between the locations 9' and 10 without undue bending because the sliver extends around the arm which has a circular cross section, in contradistinction to conventional fiyer mechanisms in which the sliver is sharply diverted at the lower edge of the hollow arm 4.

I claim:

1. A flyer comprising a hollow arm, having an outlet for the sliver at the lower end, a presser arm member having a part swingably mounted on said hollow arm, said member having a portion located below said hollow arm and extending approximately at a right angle to the rotation axis of the flyer and traversing an imaginary vertical line extending downward from said outlet, said last mentioned portion of said member continuing into a downwardly curved portion and subsequently into a downwardly slanted portion, followed by a portion curved in a direction opposite to the direction of the slant of said slanted portion for guiding the sliver to freely leave said outlet in a substantially vertical direction.

2. A flyer as defined in claim 1 wherein said curved portion of said presser arm member following said downwardly slanted portion continues into an upwardly inclined portion.

3. A flyer according to claim 2 wherein said upwardly inclined portion ends substantially at the elevation of the portion of said presser arm member which is located below said hollow arm.

4. -A flyer as defined in claim 1 wherein said curved portion of said presser arm member following said downwardly slanted portion continues into a portion located in a plane which is normal to the rotation axis of the flyer.

References Cited in the file of this patent UNITED STATES PATENTS 894,771 Bastien July 28, 1908 FOREIGN PATENTS 1,055 Great Britain of 1887, 

